Heater



C. F. NEWPORT.

l HEATER. APPLICATION FILED DEC-24, |917.

1 ,$320,790. Patented Nov. 4, 1919.

A v 2 SHEETS-SHEET lp f 6 gdr/26,5565:

C. F. NEWPORT.

HEATER.

, l APPLICATION FILED DEC-24, 19H. 1,320,790. Patented Nov. 4,1919.

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CHARLES F. NEWPORT', 0F CHICAGO, ILLINOIS, A SSIGNOR TO NEWPORT BOILER COMPANY, OF CHICAGO, ILLINOIS.

HEATER.

assenso.

Specication of Letters Patent.

Patented N ov. 1, 1919.

Application filed December 24, 1917. Serial No. 208,560.

To all whom t may concern:

Be it known that I, CHARLEs F. NEW- Pour, a citizen of the United States, residing at Chicago,.in the county of Cook and State of Illinois, have invented a. certain new and useful Improvement in Heaters, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

This invention relates to improvements in heaters.

In many hot water and steam heaters of that class known as self-feeding magazine heaters, inclined grates are employed in order to obtain a fuel bed of uniform depth throughout and increase the efficiency of the operation. In such a type of heater, the

ashes accumulate more rapidly near the bot tom of the grate than at the top due to the fact that the spent fuel gradually gravi. tates downwardly on the inclined grates. For this reason it is highly rdesirable to provide means whereby the ashes can be discharged more rapidly at the bottom of the grate than at the top and in some instances to discharge the ashes at the bottom without shaking the top portion of the fuel bed at all.

The object of my invention is to provide` an improved form'of inclined grate for use in combination with magazine heaters of the type above specified `and wherein the ashes may be discharged more rapidly at the bottom of the grate than at the top and, when desired, ashes may be discharged at the bottom of the grate without shaking the fuel bed near the top portion ofthe grate.

In the drawing `forming a part of this specification, Figure l is a vertical, sectional view of a magazine feed sectional heater showing my improvements in connection therewith, the heater disclosed in the drawp ing being of that class known as the isingle grate type wherein is employed a single ine,

clined grate, Fig. 2 is a top plan view of o ne of the improved grate bars. Fig. 3 is a sectional view taken substantially on the line 3-3 of Fig. 2 and illustrating the normal position of two adjacent grate bars. Fig. t is a view similar to Fig. 3 but illustrating the position assumed by the lower sections of the grate bars after the same have been partly rocked, the dotted lines in said ligure mdb cating the position of the upper sections of the same grate bars. Fig. 5 is a sectional view taken on the line 3-3 of Fig. 2, but looking in the opposite direction to that of the section corresponding to Fig. 3.

In said drawing, the heater is of that type wherein are employed a plurality of heaterI sections A, it being understood that there are as many sections as desired depending upon the capacity of the boiler Each of said sections A is provided with flue passageways B-*B at the bottom thereof, communication between which can be prevented or permitted by means lle-plates 10, located 'between each pair of sections A. Inclined walls of the section, as indicated at 10-1O are provided over the flue passageways B to prevent direct communication from the combustion chamber of the heater with the flue passageway B and compelling the gases of combustion to flow over to the outer flue passageway B. The inner of said inclined portions 10 also serve to form a support for the lower end of the fuel bed, as will be understood. The sections A are thicker at the top and vertical outer sides, as indicated at 11, and said portions abut each other and water communication is established therebetween by means of nipples 19.*12 interposed between and connecting each adjacentI pairof sections. rlhe sections A form one side of the heater and the opposite side is formed by a base casting 13 which extends the length of the heater and on the base section 13 is mounted a water section or slab lt which is also the length of the heater and forms one side wall of the combustion chamber. Mounted on the sections A and the water section 14-` is `a substantially rectangular sheet metal magazine container 15, said container being also the full length of the heater. In order to restrict the How of fuel from the magazine to the fuel bed, the sections A are provided with inclined walls 16 to form a restricted outlet in conjunction with the water section 14:. In order to vary the effective width of the discharge opening of the magazine to thereby adapt the heater for the use of dierent classes of fuel, an adjustable swinging mounted throat piece 17 is provided, the latter being hollow and water-filled and in'communication with the sections by proper piping at the ends of the heater, it being understood that the throat of removable bafsection 17 extends the full length of the heater.

The grate, which is inclined downwardly from the point where the fuel is fed thereon is comprised of a plurality of grate bars, designated generally by the reference G. The grate bars G are rockably mounted in longitudinally extending supports 1S and 19, the former being located at the upper end of the grate and the latter at the lower end and there are one fewer grate bars than there are sections A forming the boiler.

In carrying out my invention, each of the grate bars G is formed in two sections, designated at G and G2. The upper section G2 of each grate bar is notched out, as indicated by the dotted lines 20 in Fig. 2 and supported on a suitable stud carried by the bar 18. The lower section G of each grate bar is provided at its lower end with a short journal 21 suitably mounted in the bar 19 and each section G is also provided at its upper end with an extended journal 22 which -is seated in suitable bearings 23 and 24- of the upper section G2 of the bar. In this manner, it is apparent that both sections G and G2 are adapted to rock or oscillate about the same axis and the sections mutually support each other at the center of the grate. 1n order to rock the grate bars, the lower section G of each of said bars is provided with an upstanding crank arm 25, the crank arms being engaged by a longitudinally reciprocating shaker bar 2G operated at the end of the heater by any suitable system of leverage, as will be understood. As will be obvious, the shaker bar 26 serves an additional function in that it is adapted to break up the fuel bed or clinkers at the lower portion of the fuel bed, said bar 26 being preferably ribbed onits inner face for this purpose.

Each of the bars G is formed with a series of spaced, transversely extending ribs or fingers 27 in the usual manner to permit the air for combustion to circulate therethrough, said ribs or fingers being integrally connected by other ribs 28 extending lengthwise of the bar. As clearly appears from Figs l, 3, 4: and 5, the grates have their upper surfaces curved for their greater portion, as indicated at 29, and the edges thereof are chamfered or beveled, as indicated at 30--30. 1t will also be noted from an inspection of said figures that the vertical depth of all of the grate bar fingers is uniform throughout the entire length of the bars, thereby making the construction one which may be cheaply and easily manufactured. In order that the lower sections of the grate bars may be oscillated or rocked more than the upper sections or rocked independently thereof for a predetermined limited amount, I have provided the following arrangement: Each upper grate bar sec- `the grate bars.

tion G2 is provided at its lower end near the center thereof with a pair of outstanding lugs or projections 31 and 32, the former being of lesser vertical height than the latter, as appears from inspection of Figs. 3 and 5. Each lower section G is provided at its upper end with an outstanding substantially semi-circular rib 33, the latter being formed on its lower face with a pair of normally horizontally disposed shoulders 34 and 35. The upper section G2 is preferably slightly recessed, as indicated at 36, to partly accommodate said rib 33.-

The normal relative position assumed by the sections G and G2 of each grate bar is as shown in Fig. 3, that is, with the shoulder 35 of the lower section in contact with the lug or projection 32 of the upper section, and in order to insure the properl normal positioning of the parts, the upper supporting bar 18 for the grate bars is provided with a series of lugs or projections 37 to engage the upper sections G2 and prevent the same from being thrown beyond their normal horizontal position, as clearly indicated in Fig. 5. When the shaker bar 2G is reciprocated, it is apparent that the lower sections G of the grate bars will be oscillated through the cranks 25 and said lower sections G can oscillate or rock freely independent-l y of the upper sections G2 to the extent indicated most clearly in Fig. A, that is, until the shoulders 34: of the lower sections come into engagement with the lugs 33 of the upper sections. During tliis'movement, the upper sections will be held stationary due to friction and the weight of the fuel thereon.

As clearly appears from Figs. 3 and 4f, the above described movement of the lower sections G will effect a wider opening between the lower sections G', thus permitting the ashes at the lower portions of the fuel bed to fall therethrough without disturbing the fuel bed on the upper sections G2. Each time theshaker bar 26 is further moved, both sections of all the grate bars will be oscillated, thereby increasing still further the opening between the lower sections of adjacent grate bars and increasing the opening between the upper sections of During the return movement, it is obvious that there will be a certain amount of lost motion between the lower sections and the upper sections of the grate bars until the shoulders 35 of the former come into engagement with the shoulders 32 of the latter whereupon all sections will complete the return movement in unison, the final return movement being limited by engagement of the upper sections G2 with the lugs 37 hereinbefore described.

From the preceding description, it will be seen that the arrangement which 1 have provided is exceedingly simple, relatively cheap to manufacture, and effectively provides for the shaking of the lower portion of the fuel bed to discharge the ashes either 'independently of the upper portion of the manner of carrying out the invention, the

same is merely illustrative. For instance, it is apparent that my improvements may be embodied in those types of heaters wherein are employed grates of the so-called double type that is, where there are in reality two inclined grates forming a ridge where the same meet.

I claim:

l. In a heater of the character described, an inclined grate comprised of a series of rockably mounted grate bars, and means for rocking said bars, each of said bars comprising a plurality of sections, those sections of grate bars at the bottom of the grate having a greater permissible rocking movement than those sections at the top of the grate, there being a predetermined amount of lost motion between the lowermost sections and the sections neXt above, whereby to rovide wider openings between the grate ars at the bottom of the grate than at the top when the bars are rocked.

2; A grate bar adapted to cooperate with aplurality of similar grate bars to form an inclined grate for a heater, said grate bar comprising two sections, the section at the lower end of the grate bar being independently movable for a predetermined distance relatively to the other section, both sections being thereafter movable in unison.

3. A grate bar adapted to coperate with a plurality of similar grate bars to form an inclined grate for a heater, said grate bar comprising two sections, the section at the lower end of the grate bar being independently movable for a predetermined distance relatively to the other section, both sections being thereafter movable in unison, and integral means on said sections for communicating the movement of the lower ,section to the other section when the saine are moved in unison.

Copies of this patent may be obtained for ve cents each, by addressing the 4. A grate bar adapted to cooperate with a plurality of similar grate bars to form an inclined grate for a heater, said grate bar comprising two sections both oscillatable about the same axis, the section at the lower end of the grate bar having a crank arm by which it is adapted to be oscillated, the lower section being independently movable relatively to the upper section for a predetermined distance, and coperating means on said sections having a predetermined amount of lost motion therebetween and adapted at the end of said amount of lost motion, to actuate the sections in unison.

5. A grate bar adapted to coperate with a plurality of similar grate bars to form an inclined grate, said grate bar comprising an upper and a lower section, the upper section being adapted to be rotatably supported at its upper end by a portion of a heater and the lower section being adapted to be rotatably supported at its lower end by a portion of the heater, one of said sections having an integral journal on which the other section is rockably mounted, there being a predetermined amount of lost motion between the sections when the grate bar is rocked.

`6. In a heater of the character described, a grate comprised of a series of rockably mounted grate bars, and means for rocking said bars, each of said bars comprising a plurality of sections, those sections of the grate bars at one side of the grate having a larger permissible rocking movement than those sections at the other side of the grate, there being a predetermined amount of lost motion between the sections of each grate bar whereby a wider opening between the grate bars at one side of the grate than at the other is obtained when the bars are rocked.

7. A grate bar adapted to coperate with a plurality of similar grate bars to form a grate for a heater, said grate bar comprising two sections, the section at one end of `the grate bar being independently movable for a predetermined distance relatively to the other section, both sections being thereafter movable in unison, and integral means on said sections for communicating the movement of the first named section to the other section when the same are moved in unison.

In witness that I claim the foregoing I have hereunto subscribed my name this 11th day of Dec. 1917.

CHARLES F. NEWPORT.

Commissioner of Patents,

Washington, D. C. 

